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https://www.readbyqxmd.com/read/28100802/hydrodynamic-detection-and-localization-of-artificial-flatfish-breathing-currents-by-harbour-seals-phoca-vitulina
#1
Benedikt Niesterok, Yvonne Krüger, Sven Wieskotten, Guido Dehnhardt, Wolf Hanke
Harbour seals are known to be opportunistic feeders, whose diet consists mainly of pelagic and benthic fish, such as flatfish. As flatfish are often cryptic and do not produce noise, we hypothesized that harbour seals are able to detect and localize flatfish using their hydrodynamic sensory system (vibrissae), as fish emit water currents through their gill openings (breathing currents). To test this hypothesis, we created an experimental platform where an artificial breathing current was emitted through one of eight different openings...
January 15, 2017: Journal of Experimental Biology
https://www.readbyqxmd.com/read/28097495/the-expression-of-hypoxia-inducible-factor-1%C3%AE-gene-is-not-affected-by-low-oxygen-conditions-in-yellow-perch-perca-flavescens-juveniles
#2
Karolina Kwasek, Simona Rimoldi, Anna Giulia Cattaneo, Timothy Parker, Konrad Dabrowski, Genciana Terova
Hypoxia can affect various fish populations, including yellow perch Perca flavescens, which is an economically and ecologically important species in Lake Erie, a freshwater system that often experiences hypoxia in the hypolimnetic part of the lake. Fish, similarly to mammals, possess molecular oxygen sensor-hypoxia-inducible factor-1 (HIF-1), a transcription factor that can affect expression of many downstream genes related to animal growth and locomotion, protein synthesis, as well as ATP and amino acid metabolism...
January 18, 2017: Fish Physiology and Biochemistry
https://www.readbyqxmd.com/read/28089854/effects-of-adolescent-methamphetamine-and-nicotine-exposure-on-behavioral-performance-and-map-2-immunoreactivity-in-the-nucleus-accumbens-of-adolescent-mice
#3
Jordan M Buck, Alysse S Morris, Sydney J Weber, Jacob Raber, Jessica A Siegel
The neurotoxic effects of methamphetamine (MA) exposure in the developing and adult brain can lead to behavioral alterations and cognitive deficits in adults. Previous increases in the rates of adolescent MA use necessitate that we understand the behavioral and cognitive effects of MA exposure during adolescence on the adolescent brain. Adolescents using MA exhibit high rates of nicotine (NIC) use, but the effects of concurrent MA and NIC in the adolescent brain have not been examined, and it is unknown if NIC mediates any of the effects of MA in the adolescent...
January 12, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/28077315/inhibition-of-inos-alleviates-cognitive-deficits-and-depression-in-diabetic-mice-through-downregulating-the-no-sgc-cgmp-pkg-signal-pathway
#4
Xiao Yan Zhou, Fang Zhang, Chang Jiang Ying, Jing Chen, Ling Chen, Jing Dong, Yue Shi, Mang Tang, Xiao Tong Hu, Zhi Hua Pan, Na Na Xu, Kui Yang Zheng, Ren Xian Tang, Yuan Jian Song
Diabetes mellitus often results in a number of complications involving impaired brain function, including cognitive deficits and depression. However, the potential mechanisms for diabetes-related cognitive deficits and depression are not fully understood. Neurons in the hippocampal, cortical and amygdala functional regions are more susceptible to damage during hyperglycemia. Neuroprotection in the brain can rescue cognitive deficits and depression induced by hyperglycemia. This study investigated the potential mechanisms underlying diabetes-related congnitive deficits and depression, determined whether the inflammatory factor inducible nitric oxide synthase (iNOS) and the nitric oxide (NO)/soluble guanylyl cyclases (sGC)/cyclic guanosine monophosphate (cGMP)/protein kinase G (PKG) pathway, play key roles in cognitive deficits and depression associated...
January 8, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/28077004/endoplasmic-reticulum-stress-modulation-as-a-target-for-ameliorating-effects-of-blast-induced-traumatic-brain-injury
#5
Brandon Peter Lucke-Wold, Aric Logsdon, Ryan C Turner, Jason D Huber, Charles L Rosen
Blast traumatic brain injury (bTBI) has been shown to contribute to progressive neurodegenerative disease. Recent evidence suggests that endoplasmic reticulum (ER) stress is a mechanistic link between acute neurotrauma and progressive tauopathy. We propose that ER stress contributes to extensive behavioral changes associated with a CTE-like phenotype. Targeting ER stress is a promising option for the treatment of neurotrauma related neurodegeneration warranting investigation. Utilizing our validated and clinically relevant Sprague-Dawley blast model, we investigated a time course of mechanistic changes that occur following bTBI (50 PSI) including: ER stress activation, iron mediated toxicity, and tauopathy via western blot and immunohistochemistry...
January 11, 2017: Journal of Neurotrauma
https://www.readbyqxmd.com/read/28062257/liraglutide-prevents-cognitive-decline-in-a-rat-model-of-streptozotocin-induced-diabetes-independently-from-its-peripheral-metabolic-effects
#6
Caterina Palleria, Antonio Leo, Francesco Andreozzi, Rita Citraro, Michelangelo Iannone, Rosangela Spiga, Giorgio Sesti, Andrew Constanti, Giovambattista De Sarro, Franco Arturi, Emilio Russo
Diabetes has been identified as a risk factor for cognitive dysfunctions. Glucagone like peptide 1 (GLP-1) receptor agonists have neuroprotective effects in preclinical animal models. We evaluated the effects of GLP-1 receptor agonist, liraglutide (LIR), on cognitive decline associated with diabetes. Furthermore, we studied LIR effects against hippocampal neurodegeneration induced by streptozotocin (STZ), a well-validated animal model of diabetes and neurodegeneration associated with cognitive decline. Diabetes and/or cognitive decline were induced in Wistar rats by intraperitoneal or intracerebroventricular injection of STZ and then rats were treated with LIR (300μg/kg daily subcutaneously) for 6 weeks...
January 3, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/28028518/study-of-the-effects-of-controlled-morphine-administration-for-treatment-of-anxiety-depression-and-cognition-impairment-in-morphine-addicted-rats
#7
Majid Motaghinejad, Sulail Fatima, Sanaz Banifazl, Mohammad Yasan Bangash, Morteza Karimian
BACKGROUND: Morphine dependency usually results in undesired outcomes such as anxiety, depression, and cognitive alterations. In this study, morphine was used to manage morphine dependence-induced anxiety, depression, and learning and memory disturbances. MATERIALS AND METHODS: Forty rats were divided equally into five groups. Group 1 received saline for 21 days. Groups 2-5 were dependent by increasing administration of morphine (15-45 mg/kg) for 7 days. For the next 14 days, morphine was administered as the following regimen: Group 2: once daily; 45 mg/kg (positive controls), Group 3: the same dose with an increasing interval (6 h longer than the previous intervals each time), Group 4: the same dose with an irregular intervals (12, 24, 36 h intervals interchangeably), and Group 5: decreasing doses once daily (every time 2...
2016: Advanced Biomedical Research
https://www.readbyqxmd.com/read/27923635/novel-application-of-a-radial-water-tread-maze-can-distinguish-cognitive-deficits-in-mice-with-traumatic-brain-injury
#8
Marcella M Cline, Josh Yumul, Lisa Hysa, Dalia Murra, Gregory G Garwin, David G Cook, Warren Ladiges, Satoshi Minoshima, Donna J Cross
INTRODUCTION: The use of forced-swim, rat-validated cognition tests in mouse models of Traumatic Brain Injury (TBI) raises methodological concerns; such models are vulnerable to a number of confounding factors including impaired motor function and stress-induced non-compliance (failure to swim). This study evaluated the ability of a Radial Water Tread (RWT) maze, designed specifically for mice, that requires no swimming to distinguish mice with controlled cortical impact (CCI) induced TBI and Sham controls...
December 3, 2016: Brain Research
https://www.readbyqxmd.com/read/27915151/earth-strength-magnetic-field-affects-the-rheotactic-threshold-of-zebrafish-swimming-in-shoals
#9
Alessandro Cresci, Rosario De Rosa, Nathan F Putman, Claudio Agnisola
Rheotaxis, the unconditioned orienting response to water currents, is a main component of fish behavior. Rheotaxis is achieved using multiple sensory systems, including visual and tactile cues. Rheotactic orientation in open or low-visibility waters might also benefit from the stable frame of reference provided by the geomagnetic field, but this possibility has not been explored before. Zebrafish (Danio rerio) form shoals living in freshwater systems with low visibility, show a robust positive rheotaxis, and respond to geomagnetic fields...
February 2017: Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology
https://www.readbyqxmd.com/read/27896814/evaluation-of-swimming-performance-for-fish-passage-of-longnose-dace-rhinichthys-cataractae-using-an-experimental-flume
#10
D R Dockery, T E McMahon, K M Kappenman, M Blank
The swimming performance of longnose dace Rhinichthys cataractae, the most widely distributed minnow (Cyprinidae) in North America, was assessed in relation to potential passage barriers. The study estimated passage success, maximum ascent distances and maximum sprint speed in an open-channel flume over a range of water velocities and temperatures (10·7, 15·3 and 19·3° C). Rhinichthys cataractae had high passage success (95%) in a 9·2 m flume section at mean test velocities of 39 and 64 cm s(-1) , but success rate dropped to 66% at 78 cm s(-1) ...
November 28, 2016: Journal of Fish Biology
https://www.readbyqxmd.com/read/27820907/box-jellyfish-alatina-alata-has-a-circumtropical-distribution
#11
Jonathan W Lawley, Cheryl Lewis Ames, Bastian Bentlage, Angel Yanagihara, Roger Goodwill, Ehsan Kayal, Kikiana Hurwitz, Allen G Collins
Species of the box jellyfish (Cubozoa) genus Alatina are notorious for their sting along the beaches of several localities of the Atlantic and Pacific. These species include Alatina alata on the Caribbean Island of Bonaire (the Netherlands), A. moseri in Hawaii, and A. mordens in Australia. Most cubozoans inhabit coastal waters, but Alatina is unusual in that specimens have also been collected in the open ocean at great depths. Alatina is notable in that populations form monthly aggregations for spermcast mating in conjunction with the lunar cycle...
October 2016: Biological Bulletin
https://www.readbyqxmd.com/read/27807787/inbred-mice-strain-shows-neurobehavioral-changes-when-exposed-to-tannery-effluent
#12
Joyce Moreira de Souza, Wellington Alves Mizael da Silva, Bruna de Oliveira Mendes, Abraão Tiago Batista Guimarães, Aline Sueli de Lima Rodrigues, Mateus Flores Montalvão, Dieferson da Costa Estrela, Anderson Rodrigo da Silva, Guilherme Malafaia
The bovine leather processing (tanning industries) stands as a generating activity of potentially toxic waste. The emission of untreated effluents into the environment may cause serious harm to human and environmental health. Nevertheless, few studies have investigated the possible effects of intake of these effluents in experimental mammalian models. Thus, this study aimed to evaluate the neurobehavioral effects of chronic intake of different tannery effluent concentrations diluted with water (0.1, 1, and 5%) in male C57BL/6J mice...
November 2, 2016: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/27794536/adaptive-patterns-in-aquatic-amniote-bone-microanatomy-more-complex-than-previously-thought
#13
Alexandra Houssaye, P Martin Sander, Nicole Klein
Numerous amniote groups adapted to an aquatic life. This change of habitat naturally led to numerous convergences. The various adaptive traits vary depending on the degree of adaptation to an aquatic life, notably between shallow water taxa still able to occasionally locomote on land and open-marine forms totally independent from the terrestrial environment, but also between surface swimmers and deep divers. As a consequence, despite convergences, there is a high diversity within aquatic amniotes in e.g., shape, size, physiology, swimming mode...
December 2016: Integrative and Comparative Biology
https://www.readbyqxmd.com/read/27753102/observations-on-a-set-of-greco-roman-eye-ear-nose-and-throat-surgical-instruments
#14
Herbert H Dedo
The tools described in this article are verified to be Greco-Roman medical and surgical instruments for the eye, ear, nose, and throat. They include three myrtle leaf-shaped scalpels, three ear spoons, a "Q-tip," a forceps, a needle, and two arrow-pointed scalpels. One of the arrow-pointed scalpels is nearly identical to a Juerger keratome, suggesting that in Roman times, cataracts were extracted, not just "couched" into the posterior chamber. The description presented here goes beyond traditional archeological claims, because as a head and neck surgeon, I evaluated these instruments from a surgeon's point of view...
October 18, 2016: Laryngoscope
https://www.readbyqxmd.com/read/27730347/targeting-oxidative-stress-cytokines-and-serotonin-interactions-via-indoleamine-2-3-dioxygenase-by-coenzyme-q10-role-in-suppressing-depressive-like-behavior-in-rats
#15
Sally A Abuelezz, Nevien Hendawy, Yosra Magdy
Depression is a major health problem in which oxidative stress and inflammation are inextricably connected in its pathophysiology. Coenzyme Q10 (CoQ10) is an important anti-oxidant compound with anti-inflammatory and neuro-protective properties. This study was designed to investigate the hypothesis that CoQ10 by its anti-oxidant and anti-inflammatory potentials can alleviate depressive- like behavior by restoring the balance of the tryptophan catabolites kynurenine/serotonin toward the serotonin pathway by down-regulation of hippocampal indoleamine 2,3-dioxygenase 1 (IDO-1)...
October 11, 2016: Journal of Neuroimmune Pharmacology: the Official Journal of the Society on NeuroImmune Pharmacology
https://www.readbyqxmd.com/read/27696163/anxiety-and-memory-deficits-induced-by-tannery-effluent-in-c57bl-6j-female-mice
#16
Abraão Tiago Batista Guimarães, Raissa de Oliveira Ferreira, Joyce Moreira de Souza, Wellington Alves Mizael da Silva, Anderson Rodrigo da Silva, Aline Sueli de LimaRodrigues, Daniela de Melo E Silva, Renata Mazaro E Costa, André Luis da Silva Castro, Guilherme Malafaia
This study aimed to evaluate the behavior of female C57Bl/6J mice exposed to tannery effluents diluted in drinking water. Female mice were divided into a control group, in which the animals received only drinking water, and experimental groups, which received raw tannery effluent in 7.5 and 15 % concentrations diluted in water (period of 60 days). In the last experimental week, the mice (in diestrus phase) were subjected to different behavioral tests: elevated plus-maze, open-field test, forced swim test, and object recognition test...
September 30, 2016: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/27686668/physiological-constraints-and-energetic-costs-of-diving-behaviour-in-marine-mammals-a-review-of-studies-using-trained-steller-sea-lions-diving-in-the-open-ocean
#17
REVIEW
David A S Rosen, Allyson G Hindle, Carling D Gerlinsky, Elizabeth Goundie, Gordon D Hastie, Beth L Volpov, Andrew W Trites
Marine mammals are characterized as having physiological specializations that maximize the use of oxygen stores to prolong time spent under water. However, it has been difficult to undertake the requisite controlled studies to determine the physiological limitations and trade-offs that marine mammals face while diving in the wild under varying environmental and nutritional conditions. For the past decade, Steller sea lions (Eumetopias jubatus) trained to swim and dive in the open ocean away from the physical confines of pools participated in studies that investigated the interactions between diving behaviour, energetic costs, physiological constraints, and prey availability...
September 29, 2016: Journal of Comparative Physiology. B, Biochemical, Systemic, and Environmental Physiology
https://www.readbyqxmd.com/read/27669180/reliability-and-accuracy-of-a-standardized-shallow-water-running-test-to-determine-cardiorespiratory-fitness
#18
Elizabeth F Nagle, Mary E Sanders, Bethany B Gibbs, Barry A Franklin, Jacquelyn A Nagle, Philip J Prins, Caleb D Johnson, Robert J Robertson
A standardized fitness assessment is critical for the development of an individualized exercise prescription. Although the benefits of aquatic exercise have been well established, there remains the need for a standardized non-swimming protocol to accurately assess cardiorespiratory fitness (CRF) in shallow water. The present investigation was designed to assess: 1) reliability of a standardized Shallow Water Run (SWR) test of CRF; and 2) accuracy of a standardized SWR compared with a land-based treadmill test (LTM)...
September 16, 2016: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/27635325/anxiolytic-effects-of-fluoxetine-and-nicotine-exposure-on-exploratory-behavior-in-zebrafish
#19
Matthew L Singer, Kris Oreschak, Zachariah Rhinehart, Barrie D Robison
Zebrafish (Danio rerio) have emerged as a popular model for studying the pharmacology and behavior of anxiety. While there have been numerous studies documenting the anxiolytic and anxiogenic effects of common drugs in zebrafish, many do not report or test for behavioral differences between the sexes. Previous studies have indicated that males and females differ in their baseline level of anxiety. In this study, we test for a sex interaction with fluoxetine and nicotine. We exposed fish to system water (control), 10 mg/L fluoxetine, or 1 mg/L nicotine for three minutes prior to being subjected to four minutes in an open-field drop test...
2016: PeerJ
https://www.readbyqxmd.com/read/27591973/perinatal-exposure-to-the-selective-serotonin-reuptake-inhibitor-citalopram-alters-spatial-learning-and-memory-anxiety-depression-and-startle-in-sprague-dawley-rats
#20
Jenna L N Sprowles, Jillian R Hufgard, Arnold Gutierrez, Rebecca A Bailey, Sarah A Jablonski, Michael T Williams, Charles V Vorhees
Selective serotonin reuptake inhibitors (SSRIs) block the serotonin (5-HT) reuptake transporter (SERT) and increase synaptic 5-HT. 5-HT is also important in brain development; hence when SSRIs are taken during pregnancy there exists the potential for these drugs to affect CNS ontogeny. Prenatal SSRI exposure has been associated with an increased prevalence of autism spectrum disorder (ASD), and peripheral 5-HT is elevated in some ASD patients. Perinatal SSRI exposure in rodents has been associated with increased depression and anxiety-like behavior, decreased sociability, and impaired learning in the offspring, behaviors often seen in ASD...
November 2016: International Journal of Developmental Neuroscience
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